Dear Expert Members,

I have problems flatten to mold. Please help me...
For example, there are products in the form of a cone. From 1 cone, we want to make as much as 18 mold (mean that, 360 degrees divided by 18 is 20 degrees).
I've tried through the command Revolved, Convert To Sheet Metal, Base Flange Tab, Swept Flange, Flange Edge, to Hem. However, the result is indeed a 3D drawing I can, but when I Flatten command then the result is an error.

How we can know how many dimensions iron plate should be cut? in order to avoid a lot of wasted plate.

Thank you for your time and consideration.

Best Regards,

Cathalyst.